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Permanent magnet synchronous linear motor translation slip plane sliding mode position control method

A technology of permanent magnet synchronous linear control method, which is applied in the direction of motor generator control, AC motor control, electronic commutation motor control, etc., can solve problems that have not yet been applied, and achieve simple system structure, high stability, and good reliability. The effect of stickiness and anti-interference ability

Active Publication Date: 2014-09-10
FUZHOU UNIVERSITY
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Problems solved by technology

So far, the sliding mode control method of translational sliding plane has not been applied in permanent magnet synchronous linear motors

Method used

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  • Permanent magnet synchronous linear motor translation slip plane sliding mode position control method
  • Permanent magnet synchronous linear motor translation slip plane sliding mode position control method
  • Permanent magnet synchronous linear motor translation slip plane sliding mode position control method

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Embodiment Construction

[0031] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0032] A method for controlling the position of a permanent magnet synchronous linear motor translational sliding plane sliding mode provides a translational sliding plane sliding mode control system to realize the position control of a permanent magnet synchronous linear motor. The system includes a main circuit and a control circuit, wherein, The main circuit includes an AC power supply, a rectifier and a three-phase inverter for power supply of the entire system; the control circuit includes a current control inner loop and a position control outer loop, and the position control outer loop is provided with a sliding mode A variable structure controller, the sliding mode variable structure controller is in the position control outer loop, taking the displacement difference e between the mover displacement d and the given displacement dm ...

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Abstract

The invention relates to a permanent magnet synchronous linear motor translation slip plane sliding mode position control method, and provides a translation slip plane sliding mode position control system so as to achieve high precision position control for a permanent magnet synchronous linear motor and enable a system of the permanent magnet synchronous linear motor to have good robustness and interference resisting capability on the premise of having good tracking performance. According to the permanent magnet synchronous linear motor translation slip plane sliding mode position control method and the translation slip plane sliding mode position control system, a sliding mode variable structure controller is added in a position control outer ring so as to convert a position difference into a status variable, the permanent magnet synchronous linear motor is controlled by the controller and then slides after entering a slip plane, position tracking is stable and independent of parameter change of the motor and external disturbance, and the objectives of the position tracking and interference resistance of the permanent magnet synchronous linear motor are directly met. Compared with a traditional slip plane, the translation slip plane can enable the permanent magnet synchronous linear motor to have the good robustness and the good interference resisting capability on the premise of keeping tracking responses rapid, and the translation slip plane sliding mode position control system is simple in structure and high in stability, and can be applied to engineering practice.

Description

technical field [0001] The invention relates to a method for controlling the position of a permanent magnet synchronous linear motor translation sliding plane sliding mode. Background technique [0002] Permanent magnet synchronous linear motor is a mechanical device that can directly convert electrical energy into mechanical energy without any intermediate conversion mechanism. It has the advantages of simple structure, high precision, high speed and low maintenance. It is precisely because of the lack of intermediate buffer links that disturbances such as thrust fluctuations and friction directly act on permanent magnet synchronous linear motors. Compared with rotary motors, they are more sensitive to load disturbances and changes in the internal structure parameters of the motor, and the quality of interference suppression The requirements are higher and the degree of nonlinearity is stronger. [0003] The sliding mode variable structure control method is suitable for no...

Claims

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Application Information

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IPC IPC(8): H02P21/14H02P27/08
Inventor 黄宴委陈迪陈少斌熊少华
Owner FUZHOU UNIVERSITY
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